I found the things you asked me to find. I wrote to the local newspaper and library of the town my grandfather lived in when he died, and they sent me a copy of his obituary.
In his obituary it says he was buried with full military honors, that he served in the Army for 21 yrs [including time in WWII] before retiring, and was a member of the D.A.V. (although I've no idea what the D.A.V. is), he was also a member of the American Legion Post #8.
Date-Of-Birth was: 10-Aug-1919 IL Date-Of-Death was:9-May-1975 CO Social Security# was: 351-14-0521 (issued in IN) Military Serial# was: 6664691
I hope this is enough of the information you requested, to locate a trail for me to follow. Thanks so very much.